Software updater failed to download repository information?

[Extreedoc]

As title: it asks me to check my internet connection - which is fine. It is trying and failing to download 'Ubuntu base' 191kB
Any ideas?

[Impavidus]

Let's try and get a more specific error message. Run these commands and post the full output:

sudo apt update
sudo apt upgrade

[Extreedoc]

Thanks, I can run the commands no probs but can you remind me how to post the output on here - sorry for the dumb question...

[tea for one]

Copy the relevant text from the terminal output.
Open Go Advanced editing screen (i.e not Quick Reply)
Click on the code tag icon and paste.
The text should now be within code tags.

Preview post to double check content.

[Extreedoc]

Thanks. Problem: I can't copy the content of the terminal, the 'Copy' option is greyed out. Ctrl, Shift, C doesn't work either.
Forget this, I've figured it out...

[Extreedoc]

Forget my last post, I figured it out and here it is:

user@user-MS-7721:~$ sudo apt update
[sudo] password for user: 
Hit:5 http://archive.canonical.com/ubuntu focal InRelease                      
Get:1 http://la-mirrors.evowise.com/ubuntu focal InRelease [600 kB]       
Get:2 http://la-mirrors.evowise.com/ubuntu focal-updates InRelease [600 kB]
Get:3 http://la-mirrors.evowise.com/ubuntu focal-backports InRelease [600 kB]
Get:4 http://la-mirrors.evowise.com/ubuntu focal-security InRelease [600 kB]
Err:1 http://la-mirrors.evowise.com/ubuntu focal InRelease
  Clearsigned file is not valid, got 'NOSPLIT' (does the network require authentication?)
Err:2 http://la-mirrors.evowise.com/ubuntu focal-updates InRelease
  Clearsigned file is not valid, got 'NOSPLIT' (does the network require authentication?)
Err:3 http://la-mirrors.evowise.com/ubuntu focal-backports InRelease
  Clearsigned file is not valid, got 'NOSPLIT' (does the network require authentication?)
Err:4 http://la-mirrors.evowise.com/ubuntu focal-security InRelease
  Clearsigned file is not valid, got 'NOSPLIT' (does the network require authentication?)
Reading package lists... Done     
N: See apt-secure(8) manpage for repository creation and user configuration details.
N: Updating from such a repository can't be done securely, and is therefore disabled by default.
E: The repository 'http://la-mirrors.evowise.com/ubuntu focal InRelease' is no longer signed.
E: Failed to fetch http://la-mirrors.evowise.com/ubuntu/dists/focal/InRelease  Clearsigned file is not valid, got 'NOSPLIT' (does the network require authentication?)
N: See apt-secure(8) manpage for repository creation and user configuration details.
N: Updating from such a repository can't be done securely, and is therefore disabled by default.
E: The repository 'http://la-mirrors.evowise.com/ubuntu focal-updates InRelease' is no longer signed.
E: Failed to fetch http://la-mirrors.evowise.com/ubuntu/dists/focal-updates/InRelease  Clearsigned file is not valid, got 'NOSPLIT' (does the network require authentication?)
E: Failed to fetch http://la-mirrors.evowise.com/ubuntu/dists/focal-backports/InRelease  Clearsigned file is not valid, got 'NOSPLIT' (does the network require authentication?)
E: The repository 'http://la-mirrors.evowise.com/ubuntu focal-backports InRelease' is no longer signed.
N: Updating from such a repository can't be done securely, and is therefore disabled by default.
N: See apt-secure(8) manpage for repository creation and user configuration details.
E: Failed to fetch http://la-mirrors.evowise.com/ubuntu/dists/focal-security/InRelease  Clearsigned file is not valid, got 'NOSPLIT' (does the network require authentication?)
E: The repository 'http://la-mirrors.evowise.com/ubuntu focal-security InRelease' is no longer signed.
N: Updating from such a repository can't be done securely, and is therefore disabled by default.
N: See apt-secure(8) manpage for repository creation and user configuration details.
user@user-MS-7721:~$ sudo apt upgrade
Reading package lists... Done
Building dependency tree       
Reading state information... Done
Calculating upgrade... Done
The following packages will be upgraded:
  python3-distupgrade ubuntu-drivers-common ubuntu-release-upgrader-core
  ubuntu-release-upgrader-gtk
4 to upgrade, 0 to newly install, 0 to remove and 0 not to upgrade.
Need to get 191 kB of archives.
After this operation, 2,048 B of additional disk space will be used.
Do you want to continue? [Y/n]

[westie457]

The mirror site you using is definitely broken.
Open 'Software & Updates', in the first tab where it says Download from click in the box and change the server. Close the window and agree to the prompts.
Open a terminal and runCode:
sudo apt update
sudo apt upgrade
Post the output of the first command if any errors.

[Extreedoc]

Thank you, that seems to have done the trick, no errors reported.